Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
70
• DCC - Data compression capable
When set to one, this flag indicates the Port supports data compression as a Sequence Initiator. The drive does not
support data compression, therefore the drive returns 0b in this field.
• DCHBS - Data compression History buffer size
This field indicates the History buffer size supported by the Port as a Sequence Initiator. The drive does not support
data compression, therefore, the drive returns 00b in this field.
• DEC - Data encryption capable
When set to one, this flag indicates the Port supports data encryption as a Sequence Initiator. The drive does not sup-
port data compression, therefore the drive returns 0b in this field.
• CSC - Clock synchronization capable
When set to one, this flag indicates the Port is capable of performing clock synchronization as a Sequence Initiator
(Clock Synchronization Server). The drive is not capable of performing clock synchronization, therefore the drive
returns 0b in this field.
The
Recipient Control
flags specify which functions the supplier of the Service Parameters supports when receiving frames.
• ACK_0 Cap - ACK_0 Capability
This flag only applies to class 1 or 2, therefore is not checked by the drive. The drive returns 0b in this field.
• ACK_N Cap - ACK_N Capability
This flag only applies to class 1 or 2, therefore is not checked by the drive. The drive returns 0b in this field.
• X_ID Int. - X_ID Interlock
This flag only applies to class 1 or 2, therefore is not checked by the drive. The drive returns 0b in this field.
• EPS - Error Policy Supported
0 0
Only discard supported
0 1
Reserved
1 0
Both discard and process supported
1 1
Reserved
The Error Policy bits are not checked by the drive. The drive returns 00b in this field.
• Categ. per Sequence - Categories per Sequence
0 0
1 Category/Sequence
0 1
2 Categories/Sequence
1 0
Reserved
1 1
More than 2 Categories/Sequence
.
The drive returns 00b in this field.
The
Receive Data Field
size is the largest payload (in bytes) that the Port is capable of receiving. It must be less than or equal
to the Buffer to Buffer Receive Data Field specified in the Common Service Parameters. Sizes less than 128, greater than
2112, or not divisible by 4 are invalid, in which case the drive will respond with an LS_RJT containing a reason code of 03h
“Logical error” and a reason code explanation of 07h “Service Parm error - Rec Data Field Size”. The drive returns 2048 in
this field.
The
Concurrent Sequences
field specifies the number of separate Sequences that the drive is capable of tracking. The value
sent must be > 0, or the drive will respond with an LS_RJT containing a reason code of 03h “Logical error” and a reason code
explanation of 09h “Service Parm error - Concurrent Seq”. The drive returns a value of 255 in this field.
The
End-to-end Credit
field applies only to classes 1 and 2 and is therefore not checked by the drive. The drive returns 0 in
this field.
Summary of Contents for Ultrastar 15K450
Page 18: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 2 ...
Page 20: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 4 ...
Page 22: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 6 ...
Page 30: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 14 ...
Page 32: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 16 ...
Page 34: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 18 ...
Page 44: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 28 ...
Page 60: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 44 ...
Page 62: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 46 ...
Page 65: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 49 Korea MIC Taiwan BSMI ...
Page 66: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 50 ...
Page 68: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 52 ...
Page 118: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 102 ...
Page 130: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 114 ...
Page 180: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 164 ...
Page 299: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 283 ...
Page 322: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 306 ...
Page 324: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 308 ...
Page 387: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 371 ...
Page 392: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 376 ...